Linked Data 2: Hvordan KoG31 Uke 7, 2012.

Presentasjon om: "Linked Data 2: Hvordan KoG31 Uke 7, 2012."— Utskrift av presentasjonen:

1 Linked Data 2: Hvordan David.Massey@jbi.hio.no KoG31 Uke 7, 2012

2 "The Ontology Engineering Group, within the context of its Linked Data projects, is pleased to announce that the datos.bne.es [1] initiative has been launched. datos.bne.es is an open initiative aimed at enriching the Web of Data with library data from the Spanish National Library. The SPARQL endpoint is available at [2]. The RDF generation from MARC 21 records was done using our tool MARiMbA [3], which allows non-technical users to work on the mappings from MARC21 metadata to RDF using different RDFS/OWL vocabularies. This initiative is part of the project “Linked data at the BNE”, supported by the BNE in cooperation with the Ontology Engineering Group (OEG) at the Universidad Politécnica de Madrid (UPM). With this initiative, the BNE takes the challenge of publishing bibliographic and authority data in RDF, following the Linked Data Principles and under the CC0 (Creative Commons Public Domain Dedication) open license. Thereby, Spain joins the initiatives that libraries from countries such as the United Kingdom and Germany have recently launched. Approximately 2.4 million bibliographic records have been transformed into RDF. They are modern and ancient monographies, sound-recordings and musical scores. Besides, 4 million authority records of persons, corporate names, uniform titles and subjects have been transformed. The transformation process has generated around 58 million RDF triples and about 600K owl:sameAs links to other datasets such as DBPedia or VIAF. More information can be found in the DataHub entry [3] " datos.bne.es Daniel Vila, 13-2-2012 http://lists.w3.org/Archives/Public/semantic-web/2012Feb/0082.html

3 "Lyst til å utvikle nye semantiske tjenester for bibliotek og forskere? Ledig stilling ved Seksjon for digitale systemer og tjenester fra 1. mars! … Det er ønskjeleg med kjennskap til semantiske teknologiar (Triplestores, RDF, SPARQL), Linked Data, Javascript, Webservices/API-ar, PHP, Solr, Lucene, Linux XML, HTML5/CSS3." … Tarje Sælen Lavik – Spesialbibliotekar Seksjon for digitale system og tjenester, Universitetsbiblioteket i Bergen Biblioteknorge, 14-2-2012 09:30 http://www.nb.no/cgi- bin/wa?A2=ind1202&L=BIBLIOTEKNORGE&D=1&T=0&O=D&P=115356

4 Kongene: Metadata, standarder og data

5 Fra: http://www.ibtimes.com/articles/112144/20110214/obama- 2012-budget-education-low-income.htm

6 Data er viktig! http://www.regjeringen.no/nb/dep/kud/dok/nouer/2010/no u-2010-14/6.html?id=628640

7 Data er viktig!

8 Data for mennesker (dokumenter)

9 Data for datamaskiner

10 Linked data – en definisjon "A term used to describe a recommended best practice for exposing, sharing, and connecting pieces of data, information, and knowledge on the Semantic Web using URIs and RDF." Fra: http://linkeddata.org/ URI = Uniform Resource Identifier RDF = Resource Description Framework 2006

11 Linked Data - hvordan 1.Use URIs as names for things 2.Use HTTP URIs so that people can look up those names. 3.When someone looks up a URI, provide useful information, using the standards ( RDF, SPARQL) 4.Include links to other URIs. so that they can discover more things. Fra: http://www.w3.org/DesignIssues/LinkedData.html HTTP URIs = URLs

12 Andre sentrale byggesteiner i tillegg til URIer og RDF XML Vokabular

13 Har navn Paul Weller Er en Musiker

14 Har navn The Jam Er en Musikkgruppe

15 Var medlem av The Jam Paul Weller

16 Har navn Woking Er en By

17 Paul Weller The Jam Var medlem av Woking Var født i

18 Har tittel The War of the Worlds Er en Bok Er skrevet av H.G. Wells

19 Lansert i 1953 Er en Film Lansert i 2005 Er en Film filmatisert Har navn H.G. Wells Er en Forfatter Skrevet av

20 Har navn Martian tripod Er en Skulptur

21 Paul Weller The Jam Var medlem i Woking Var født i Martian tripod The War of the Worlds Ligger i Var basert i

22 Objekt – Egenskap – Verdi Subjekt – Predikat – Objekt

23 Tripler

24 Har navnPaul Weller SubjektPredikatObjekt Var medlem av Har navnThe Jam Har navn Woking Var født i

25 Vi må entydig identifisere det vi skal beskrive, dvs. subjektet.

26 Subjekt

27 Predikater må også identifiseres. Mer lesbar for mennesker når prefikser brukes: Vi kan gjøre det samme med subjekter:

28 Predikater

29 Predikater samles i vokabularer FOAF (Friend of a friend) innholder predikater som kan brukes for å beskrive personer og organisasjoner. Dublin Core innholder predikater som kan brukes for å beskrive dokument lignende objekter (DLOer) SKOS (Simple Knowledge organisation System) innholder predikater som kan brukes for å beskrive tesauri, klassifikasjonsskjema, emneordslister, osv. dc:title dc:creator dc:subject skos:prefLabel skos:altLabel skos:narrower skos:broader

30 Objekter er enten litteral (tekst, nummer, datoer, …) eller andre subjekter

31 103932 Paul Weller 1958-05-25 1.8

32 103932 Paul Weller 1958-05-25 1.8

33 Linked Open Data "The goal of the W3C SWEO Linking Open Data community project is to extend the Web with a data commons by publishing various open data sets as RDF on the Web and by setting RDF links between data items from different data sources." http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData

34 Mars, 2009

35 September, 2010

36 http://www.bbc.co.uk/music/artists/c4406045-e640-4cfe-8b88- 4732cce314d4#p009x1xg

37 http://dbpedia.org/data/Paul_Weller.rdf http://www.bbc.co.uk/music/artists/c4406045-e640-4cfe-8b88- 4732cce314d4#p009x1xg

38 ?

39 http://musicbrainz.org/mm-2.1/artistrel/c4406045-e640-4cfe-8b88- 4732cce314d4#p009x1xg

40 ?

41 http://www.bbc.co.uk/music/artists/c4406045-e640-4cfe-8b88- 4732cce314d4.rdf

42 ?

43 Hva med bibliotekdata?

44

45 http://libris.kb.se/data/bib/4572831?format=application/rdf%2bxml Mai, 2009

46 H. G. Wells 2005 Världarnas krig / H. G. Wells ; översättning av Gertrud Hallvig 9100108669

47

48 http://id.loc.gov/authorities/sh85081548.rdf

49 http://dewey.info/class/523/about.no.rdf http://dewey.info/class/523/about.ru.rdf

50 http://bibin.hioa.no/~davm/bokhylla/700.html

51

52

53 http://www.bibpode.no/

54

55 http://bibin.hioa.no/~davm/onskebok/mobil/start.html

56 "Experiment with Semantic Web and linked data technologies to see what benefits to the bibliographic framework they offer our community and how our current models need to be adjusted to take fuller advantage of these benefits." http://www.loc.gov/marc/transition/news/framework-051311.html

57 http://librarylab.law.harvard.edu/dpla/demo/app/

58 Foto: Lego city http://www.flickr.com/photos/eiriknewth/ Paul Weller http://www.flickr.com/photos/nrk-p3/ The Jam http://www.flickr.com/photos/topsy/ Woking http://www.flickr.com/photos/clocky/ Skulptur http://www.flickr.com/photos/mrasoulov/ H.G. Wells http://commons.wikimedia.org/wiki/Main_Page Tripler http://www.flickr.com/photos/jacqueline-w/ Kongene http://www.flickr.com/photos/33498942@N04/ TBL http://commons.wikimedia.org/wiki/Main_Page Atoumium http://www.flickr.com/photos/abhilashravishankar/